Waveforms; Ic Pin Function Description - Sony HCD-M100 Service Manual

6-24. WAVEFORMS

– MAIN Section –
1 3
IC2 ws (XOUT) IC501 ea (EXTAL)
5.5Vp-p
10 MHz
75 kHz 4.8Vp-p
2
IC401 ea (EXTAL)
10 MHz
4.8Vp-p
– BD Section –
1 5
IC101 ra (RFSM)TP(RF) IC102 rf (XOUT)X101
5.2Vp-p
1.7Vp-p
16.9344 MHz
2 6
IC101 w; (FE) IC102 y; (16M)
(PLAY MODE)
0.5Vp-p
5.3Vp-p
16.9344 MHz
7
3 IC102 ya (4.2M)
IC101 7 (TE)TP(TE)
0.4Vp-p
5Vp-p
4.2336 MHz
4
IC102 wa (PCK)TP(PLCK)
5.2Vp-p
230ns
– PANEL Section –
1
IC601 8 (X-OUT)
8MHz
4.2Vp-p
48

6-25. IC PIN FUNCTION DESCRIPTION

BD BOARD IC101 LA9240M (FOCUS/TRACKING/SLED SERVO, RF AMP)
Pin No. Pin Name I/O
Connected to the pick-up photodiode
1 FIN2 I
Added with FIN1 to create RF signal, subtracted with FIN1 to create FE signal
2 FIN1 I Connected to the pick-up photodiode
3 E I Connected to the pick-up photodiode Subtracted with F to create TE signal
4 F I Connected to the pick-up photodiode
5 TB I DC component of the TE signal is input
6 TE– I Connects the TE signal gain setting resistor between TE pins
7 TE O TE signal output
8 TESI I TES (Track Error Sense) comparator input. The TE signal is band-passed and input
9 SCI I Shock detection input
10 TH I Tracking gain time constant setting
11 TA O TA amplifier output
12 TD– I Creates a tracking phase compensation constant between TD and VR pins
13 TD O Tracking phase compensation setting
14 JP I Tracking jump signal (kick pulse) amplitude setting
15 TO O Tracking control signal output
16 FD O Focusing control signal output
17 FD– I Creates a focusing phase compensation constant between FD and FA pins
18 FA O Creates a focusing phase compensation constant between FD- and FA- pins
19 FA– I Creates a focusing phase compensation constant between FA and FE pins
20 FE O FE signal output
21 FE– I Connects the FE signal gain setting resistor between TE pins
22 AGND — Analog signal Ground
23 SP O Single end output of CV+ and CV- pin signal
24 SPI I Spindle amplifier input
25 SPG I Gain setting resistor is connected when the spindle 12cm mode
26 SP– I Works together with the SPD pin to connect to the spindle phase compensation constant
27 SPD O Spindle control signal output
28 SLEQ I Sled phase compensation constant is connected
29 SLD O Sled control signal output
30 SL– I Sled feeding signal is input from the microprocessor
31 SL+ I Sled feeding signal is input from the microprocessor
32 JP– I Tracking jump signal is input from the DSP
33 JP+ I Tracking jump signal is input from the DSP
34 TGL I Tracking gain control signal is input from the DSP Gain becomes low when TGL is "H"
Tracking off control signal is input from the DSP
35 TOFF I
Tracking becomes off when TOFF is "H"
36 TES O Outputs TES signal to the DSP
HFL (High Frequency Level) is used to determine whether the main beam is
37 HFL O
positioned on a pit or a mirror
48
Function